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Poly (3, 4-ethylenedioxythiophene)/nickel cobaltate/carbon cloth flexible electrode

A technology of ethylenedioxythiophene and dioxythiophene, which is applied in the direction of hybrid capacitor electrodes and electrolytic capacitors, can solve the problems of easy agglomeration specific capacitance, etc., and achieve the effects of improving specific capacitance, avoiding surface dead gas, and high conductivity

Active Publication Date: 2021-12-10
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems of easy agglomeration and low specific capacitance of poly 3,4-ethylenedioxythiophene when it is used as a flexible supercapacitor electrode material, and provides a poly 3,4-ethylenedioxythiophene / nickel cobaltate / Carbon cloth flexible electrode and preparation method thereof

Method used

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  • Poly (3, 4-ethylenedioxythiophene)/nickel cobaltate/carbon cloth flexible electrode
  • Poly (3, 4-ethylenedioxythiophene)/nickel cobaltate/carbon cloth flexible electrode
  • Poly (3, 4-ethylenedioxythiophene)/nickel cobaltate/carbon cloth flexible electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) At room temperature, add 1 g of cobalt nitrate hexahydrate and 0.3 g of nickel nitrate hexahydrate into 80 mL of methanol. After magnetic stirring for 20 min, add 1.5 g of hexamethylenetetramine and continue magnetic stirring for 15 min. The temperature was raised to 160 °C, magnetically stirred for 12 h, cooled to room temperature naturally, first centrifuged, washed, vacuum dried at 60 °C for 24 h, and then annealed at 330 °C for 3 h to prepare nickel cobaltate.

[0027] (2) Add 60 mg of ammonium persulfate to 20 mL of deionized water, stir magnetically at room temperature for 8 min, and add 1 mL of hydrochloric acid solution dropwise at a rate of 15 drops / min under magnetic stirring to prepare mixed solution A ; Add 50 mg of nickel cobaltate to 30 mL of deionized water, stir magnetically at room temperature for 20 min, then sonicate for 20 min, add 80 mg of 3,4-ethylenedioxythiophene, stir magnetically for 20 min, and sonicate for 45 min , to prepare a mixed disp...

Embodiment 2

[0034](1) At room temperature, add 0.5 g of cobalt nitrate hexahydrate and 0.2 g of nickel nitrate hexahydrate into 50 mL of ethanol, stir magnetically for 10 min, add 1 g of hexamethylenetetramine, and continue magnetic stirring for 10 min. The temperature was raised to 140 °C, magnetically stirred for 16 h, cooled to room temperature naturally, first centrifuged, washed, vacuum dried at 60 °C for 24 h, and then annealed at 300 °C for 4 h to prepare nickel cobaltate.

[0035] (2) Add 40 mg ammonium persulfate to 10 mL deionized water, stir magnetically at room temperature for 5 min, and add 0.5 mL hydrochloric acid solution dropwise at a rate of 10 drops / min under magnetic stirring to prepare mixed solution A ; Add 20 mg of nickel cobaltate to 10 mL of deionized water, stir magnetically at room temperature for 10 min, then sonicate for 10 min, add 50 mg of 3,4-ethylenedioxythiophene, stir magnetically for 10 min, and sonicate for 30 min , to prepare a mixed dispersion B; put ...

Embodiment 3

[0038] (1) At room temperature, add 2 g of cobalt nitrate hexahydrate and 0.4 g of nickel nitrate hexahydrate into 100 mL of ethanol. After magnetic stirring for 30 min, add 2 g of hexamethylenetetramine and continue magnetic stirring for 20 min. Raise the temperature to 180 °C, stir magnetically for 8 h, cool to room temperature naturally, centrifuge, wash, and vacuum dry at 60 °C for 24 h, then anneal at 360 °C for 2 h to prepare nickel cobaltate.

[0039] (2) Add 80 mg ammonium persulfate to 30 mL deionized water, stir magnetically at room temperature for 10 min, and add 2 mL hydrochloric acid solution dropwise at a rate of 20 drops / min under magnetic stirring to prepare mixed solution A ; Add 80 mg of nickel cobaltate to 50 mL of deionized water, stir magnetically at room temperature for 30 min, then sonicate for 30 min, add 100 mg of 3,4-ethylenedioxythiophene, stir magnetically for 30 min, and sonicate for 60 min , to prepare a mixed dispersion B; place the acidified car...

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Abstract

The invention discloses a poly (3, 4-ethylenedioxythiophene) / nickel cobaltate / carbon cloth flexible electrode and a preparation method thereof, and belongs to the technical field of preparation of electrodes for supercapacitors. The flexible electrode is prepared through an in-situ chemical oxidation method by taking carbon cloth of which the surface is acidized as a carrier, taking nickel cobaltate prepared by a hydrothermal method as a supporting material, taking 3, 4-ethylenedioxythiophene as a monomer and taking ammonium persulfate as an oxidizing agent. The flexible electrode prepared by the method has high specific capacitance and excellent electrochemical cycle stability, is mainly used for manufacturing a flexible supercapacitor, and has remarkable economic value and social benefit.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrodes for supercapacitors, and in particular relates to a poly-3,4-ethylenedioxythiophene / nickel cobaltate / carbon cloth flexible electrode and a preparation method thereof. Background technique [0002] With the development of science and technology and the improvement of people's living standards, portable electronic devices, such as flexible advertising screens, smart bracelets, smart folding notebooks and smart folding mobile phones, are developing in the direction of multi-function, thinner and more flexible. The development of flexible supercapacitors with high power density and large specific capacity is an important work for the development of flexible portable electronic devices. Flexible electrodes are an important part of flexible supercapacitors, and the performance of electrodes will directly affect the performance of supercapacitors. Therefore, the research and developmen...

Claims

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Application Information

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IPC IPC(8): H01G11/22H01G11/30H01G11/32
CPCH01G11/22H01G11/32H01G11/30Y02E60/13
Inventor 李宝铭曹顶发吴松滨张璇
Owner FUZHOU UNIVERSITY
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